Carrier 30WG 080 - 6.4.1 - Field control wiring; 6.4.2 - On-site control wiring

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The calculations are based on the maximum machine current
(see electrical data tables). For the design the following
standardised installation methods are used, in accordance
with IEC 60364, table 52C:
• For units installed inside the building:
No.13: perforated horizontal cable conduit, and No. 41:
closed conduit.
The calculation is based on PVC or XLPE insulated cables
with copper or aluminium core. A maximum ambient
temperature of 40 °C has been taken into account. The given
wire length limits the voltage drop to < 5%.
IMPORTANT: Before connection of the main power cables
(L1 - L2 - L3) on the terminal block, it is imperative to
check the correct order of the 3 phases before proceeding to
the connection on then terminal block or the main disconnect/
isolator switch.
6.4.2 - On-site control wiring
Selection of minimum and maximum wire sections for connection to 61WG units
61WG Max.
connectable
section*
Calculation favourable case: Suspended aerial lines
(standardised routing No. 17)
PVC insulated cable
Calculation unfavourable case: Conductors in conduits or multi-
conductor cables in closed conduit (standardised routing No. 41)
PVC insulated cable, if possible
Section Section** Max. length for
voltage drop <5%
Cable type Section** Max. length for voltage
drop <5%
Cable type***
mm² (per phase) mm² (per phase) m mm² (per phase) m
020 1x35 1x2.5 60 PVC Cu 1 x 4 100 PVC Cu
025 1x35 1x2.5 60 PVC Cu 1 x 4 100 PVC Cu
030 1x35 1 x 4 80 PVC Cu 1 x 6 120 PVC Cu
035 1x35 1 x 4 80 PVC Cu 1 x 6 120 PVC Cu
040 1x35 1 x 6 100 PVC Cu 1 x 10 150 PVC Cu
045 1x35 1 x 6 100 PVC Cu 1 x 10 150 PVC Cu
050 1x35 1 x 10 120 PVC Cu 1 x 16 180 PVC Cu
060 1x35 1 x 10 120 PVC Cu 1 x 16 180 PVC Cu
070 1x35 1 x 16 140 PVC Cu 1 x 25 205 PVC Cu
080 1x35 1 x 16 140 PVC Cu 1 x 25 205 PVC Cu
090 1x35 1 x 25 170 PVC Cu 1x35 225 PVC Cu
Selection of minimum and maximum wire sections for connection to 30WG/30WGA units
30WG
30WGA
Max.
connectable
section*
Calculation favourable case: Suspended aerial lines
(standardised routing No. 17)
PVC insulated cable
Calculation unfavourable case: Conductors in conduits or multi-
conductor cables in closed conduit (standardised routing No. 41)
PVC insulated cable, if possible
Section Section** Max. length for
voltage drop <5%
Cable type Section** Max. length for voltage drop
<5%
Cable typee***
mm² (per phase) mm² (per phase) m mm² (par phase) m
020 1x35 1 x 2,5 60 PVC Cu 1 x 4 100 PVC Cu
025 1x35 1 x 2,5 60 PVC Cu 1 x 4 100 PVC Cu
030 1x35 1 x 4 80 PVC Cu 1 x 6 120 PVC Cu
035 1x35 1 x 4 80 PVC Cu 1 x 6 120 PVC Cu
040 1x35 1 x 4 80 PVC Cu 1 x 6 120 PVC Cu
045 1x35 1 x 6 100 PVC Cu 1 x 10 150 PVC Cu
050 1x35 1 x 10 120 PVC Cu 1 x 16 180 PVC Cu
060 1x35 1 x 10 120 PVC Cu 1 x 16 180 PVC Cu
070 1x35 1 x 16 140 PVC Cu 1 x 16 180 PVC Cu
080 1x35 1 x 16 140 PVC Cu 1 x 25 205 PVC Cu
090 1x35 1 x 16 140 PVC Cu 1 x 25 225 PVC Cu
* Connectioncapacitiesactuallyavailableforeachmachine,denedaccordingtotheconnectionterminalsize,thecontrolboxaccessopeningsizeandtheavailable
spaceinsidethecontrolbox.
** Selectionsimultationresultconsideringthehypothesisindicated.
*** IfthemaximumcalculatedsectionisforanXLPEcabletype,thismeansthataselectionbasedonaPVCcabletypecanexceedtheconnectioncapacityactually
available.Specialattentionmustbegiventotheselection.
Note:Thecurrentsconsideredaregivenforamachineequippedwithahydronickitoperatingatmaximumcurrent.
6.4.1 - Field control wiring
IMPORTANT: Field connection of interface circuits may
lead to safety risks: any control box modication must
maintain equipment conformity with local regulations.
Precautions must be taken to prevent accidental electrical
contact between circuits supplied by different sources:
• The routing selection and/or conductor insulation
characteristics must ensure dual electric insulation.
• In case of accidental disconnection, conductor xing
between different conductors and/or in the control box
prevents any contact between the conductor ends and an
active energised part.
Refer to the 61WG/30WG/30WGA Pro-Dialog+ Controls
IOM and the certied wiring diagram supplied with the unit
for the eld control wiring of the following features:
• Remote on/off switch
• Remote heat/cool switch
• Demand limit external switch 1
• Remote dual set point
• Alarm report
• Pump control - unit without hydronic module.
• Relief boiler or electric heater
• Valve control - see description of options 153 and 154 in the
61WG/30WG/30WGA Pro-Dialog+ controls manual